Honeywell SmartVFD HVAC MR4, User Manual

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Honeywell
• 83 HVAC A
PPLICATION
EXAMPLE OF THE INTERLOCK LOGIC:
If the motor starting order is
1 -> 2 -> 3 -> 4 -> 5
Now, the interlock of motor 3 is removed, i.e. the value of parameter M3.5.1.27 is set to FALSE,
the order changes to:
1 -> 2 -> 4 -> 5 .
If motor 3 is taken into use again (changing the value of parameter M3.5.1.27 to TRUE) the
system runs on without stopping and motor 3 is placed last in the sequence:
1 -> 2 -> 4 -> 5 -> 3
As soon as the system is stopped or goes to sleep mode for the next time, the sequence is
updated to its original order.
1 -> 2 -> 3 -> 4 -> 5
M3.14.3 I
NCLUDE
FC
WIRING
There are two different ways to make the connections depending on whether selection 0 or 1
is set as parameter value.
Selection 0, Disabled:
The drive or the regulating motor is not included in the autochange or interlocks logic. The drive
is directly connected to motor 1 as in Figure 25 below. The other motors are auxiliary ones con-
nected to the mains by contactors and controlled by relays in the drive.
Selection Selection name Description
0 Disabled Motor 1 (motor connected to drive) is always frequency
controlled and not affected by interlocks.
1 Enabled All motors can be controlled and are affected by inter-
locks.